发明名称 |
ELECTROMAGNETIC LOGGING BETWEEN A CASED BOREHOLE AND SURFACE |
摘要 |
The present disclosure relates to systems and methods for conducting an electromagnetic borehole-to-surface survey of a formation surrounding a borehole. Such methods include deploying a dipole transmitter into the borehole to a depth of investigation, deploying an array of electromagnetic receivers outside of the wellbore, and measuring a response of the formation at the array of electromagnetic receivers deployed outside of the wellbore, for example at the surface. From the response of the formation a property of the formation can be determined based on the response of the formation measured at the array of electromagnetic receivers. For the scenario of a cased well, a local reference receiver may be added at a location proximate the borehole to measure the effective magnetic moment of the transmitter inside the casing, and normalize the formation response in order for a more accurate determination of a formation characteristic, such as resistivity. These receivers can also be used for other types of surveys. |
申请公布号 |
WO2011041248(A2) |
申请公布日期 |
2011.04.07 |
申请号 |
WO2010US50338 |
申请日期 |
2010.09.27 |
申请人 |
SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;ZHANG, HONG;ROSTHAL, RICHARD, A. |
发明人 |
ZHANG, HONG;ROSTHAL, RICHARD, A. |
分类号 |
G01V3/26;E21B47/00;G01R33/02;G01V3/34 |
主分类号 |
G01V3/26 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|